Concerns about using Prime95 small-FFTs are addressed through the addition of Cinebench and Blender. The hottest default test for Blender 2.82 was its “pavillon_barcelona” scene producing the greatest amount of heat, so we downloaded the CLI (command-line interface) version under the organization’s “other platforms” dropdown and wrote a batch file to repeat the test eleven times. Meanwhile, Cinebench allowed us to simply set a minimum runtime and repeated the test until the runtime had lapsed.
Cinebench warms up faster, but to a slightly lower temperature than the other two tests. Perhaps if the benchmark length were a bit longer—requiring fewer cycles to complete this one-hour test—it might even have been the best metric. But, it’s close enough to the other power tests that we wouldn’t call anyone out for using it in this configuration.
Retesting At 40% PWM
Concerns that our fans might be performing beyond those of the typical system are easily addressed by dropping PWM cycles to 40%. The ~ 945 RPM result should be slow enough to represent a wider range of systems with front-mounted dual-fan radiators.
The worst reading of 102 degrees at 40% fans in Prime95 small-FFTs also happens to be the point at which the motherboard was supposed to have throttled the CPU, had we not configured it to a higher throttle point. If any of us owned this 3900X machine, we’d start looking for ways to get more airflow (such as fans that spin faster than 945 RPM).
Retesting In A Closed Build
The Phantom 410 is designed to support a 2x140mm radiator internally with two intake fans between the frame and top cover, but we flipped that arrangement with our 2x120mm unit to match traditional orientation: Both fans are under the radiator, blowing upward. We even tossed a pair of 3.5-inch drives in the lower bay to keep the build as realistic as possible.
We’ll speed this part up since you’re probably getting tired of redundant data: Putting the MPG X570 Gaming Plus into a top-radiator case resulted in dramatically lower temperatures compared to our front-cooled test platform. But, what about overclocking?
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